US12535772B2ActiveUtilityA1

Timepiece component, timepiece movement, and timepiece

Assignee: SEIKO EPSON CORPPriority: Mar 23, 2022Filed: Mar 22, 2023Granted: Jan 27, 2026
Est. expiryMar 23, 2042(~15.7 yrs left)· nominal 20-yr term from priority
Inventors:FUNAKAWA TAKEO
G04B 19/12G04B 19/04G04B 13/02G04B 45/02G04B 45/0015G04B 45/0007G04B 19/042G04B 13/027
78
PatentIndex Score
0
Cited by
9
References
12
Claims

Abstract

A timepiece component includes a base material including silicon as a main component, and a light reflecting layer formed on the base material and including a first silicon oxide layer, a silicon layer, and a second silicon oxide layer stacked in this order, when the light reflecting layer is viewed in plan view, the light reflecting layer includes a first region and a second region, and at least one of the thicknesses of the first silicon oxide layer in the first region and the second region and the thicknesses of the second silicon oxide layer in the first region and the second region is set such that the thicknesses are different from each other.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A timepiece component comprising:
 a base material including silicon as a main component; and   a light reflecting layer formed on the base material and including a first silicon oxide layer, a silicon layer, and a second silicon oxide layer stacked in this order, wherein   when the light reflecting layer is viewed in a direction normal to a plane defined by the light reflecting layer, the light reflecting layer includes a first region and a second region, and   a thickness of the first silicon oxide layer in the first region and in the second region is different from each other.   
     
     
         2 . The timepiece component according to  claim 1 , wherein,
 furthermore, a thickness of the silicon layer in the first region is different from a thickness of the silicon layer in the second region.   
     
     
         3 . The timepiece component according to  claim 1 , wherein
 when the light reflecting layer is viewed in plan view, the light reflecting layer further includes a third region,   at least one of thicknesses of the first silicon oxide layer in the first region and in the third region, thicknesses of the silicon layer in the first region and in the third region, or thicknesses of the second silicon oxide layer in the first region and in the third region is different from each other, and   at least one of thicknesses of the first silicon oxide layer in the second region and in the third region, thicknesses of the silicon layer in the second region and in the third region, or thicknesses of the second silicon oxide layer in the second region and in the third region is different from each other.   
     
     
         4 . The timepiece component according to  claim 3 , wherein
 colors in the first to third regions are different.   
     
     
         5 . The timepiece component according to  claim 4 , wherein
 a decoration is provided, the decoration including a first color expressed by the first region, a second color expressed by the second region, and a third color expressed by the third region.   
     
     
         6 . The timepiece component according to  claim 5 , wherein
 the decoration includes a three-color stripe line, and   the three-color stripe line includes a first line formed by the first region, a second line formed by the second region, and a third line formed by the third region.   
     
     
         7 . The timepiece component according to  claim 5 , wherein
 the decoration includes a base, a mark provided in the base, and a portion provided in the base and in a surrounding of the mark,   the base is formed by any one of the first region, the second region, and the third region,   the mark is formed by a region, of the first to third regions, different from the region forming the base, and   the surrounding of the mark is formed by a region, of the first to third regions,   different from the region forming the base and the region forming the mark.   
     
     
         8 . The timepiece component according to  claim 1 , wherein
 the timepiece component is at least one of a movement barrel complete, a wheel and pinion, an escape wheel and pinion, a pallet fork, or a balance with hairspring.   
     
     
         9 . The timepiece component according to  claim 1 , wherein
 the timepiece component is at least one of a dial or a hand.   
     
     
         10 . A timepiece movement including the timepiece component according to  claim 1 . 
     
     
         11 . A timepiece including the timepiece component according to  claim 1 . 
     
     
         12 . The timepiece according to  claim 11 , wherein
 the timepiece has a see-through structure configured to cause the timepiece component to be visible.

Join the waitlist — get patent alerts

Track US12535772B2 — get alerts on status changes and closely related new filings.

We store only your email — no account needed. See our privacy policy.